Luftwaffe 4-pocket tunic for a Sanitätsoberfeldwebel

Luftwaffe 4-pocket service tunic "Waffenrock". 

Branch: Medical Corps
Rank: Sanitätsoberfeldwebel
Shoulder boards. Slip-on types. Sanitätsoberfeldwebel with blue piping and aluminum pips, tress.

Collar tabs: Blue. Four wings. Attached by machine.
Collar: Blue twisted cord in place with silver tress.

Breast eagle: Machine-embroidered. EM/NCO type. Period time attached by hand.

Buttons: Complete
Lining: Cotton. 

Sleeve patch for medical troops attached by hand. Machine-embroidered EM/NCO type.
 

A few stains on the reverse as shown in the pictures.